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https://doi.org/10.5194/acpd-11-29251-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acpd-11-29251-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
28 Oct 2011
Status: this preprint was under review for the journal ACP. A revision for further review has not been submitted.
The Morning NO x maximum in the forest atmosphere boundary layer
Abstract. During the 1998, 2000, 2001, 2008, and 2009 summer intensives of the Program for Research on Oxidants: PHotochemistry, Emissions and Transport (PROPHET), ambient measurement of nitrogen oxides (NO + NO2 = NOx) were conducted. NO and NOx mole fractions displayed a diurnal pattern with NOx frequently highest in early morning. This pattern has often been observed in other rural areas. In this paper, we discuss the potential sources and contributing factors of the frequently observed morning pulse of NOx. Of the possible potential contributing factors to the observed morning pulse of NO and NOx, we find that surface-layer transport and slow upward mixing from soil emissions, related to the thermodynamic stability in the nocturnal boundary layer (NBL) before its morning breakup are the largest contributors. The morning NOx peak can significantly impact boundary layer chemistry, e.g. through production of HONO on surfaces, and by increasing the importance of NO3 chemistry in the morning boundary layer.
How to cite. Alaghmand, M., Shepson, P. B., Starn, T. K., Jobson, B. T., Wallace, H. W., Carroll, M. A., Bertman, S. B., Lamb, B., Edburg, S. L., Zhou, X., Apel, E., Riemer, D., Stevens, P., and Keutsch, F.: The Morning NO x maximum in the forest atmosphere boundary layer, Atmos. Chem. Phys. Discuss., 11, 29251–29282, https://doi.org/10.5194/acpd-11-29251-2011, 2011.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC C13151: 'Review of Alaghmand et al.', Anonymous Referee #2, 13 Dec 2011
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RC C13436: 'Link Between Conclusions and Measurements', William Stockwell, 20 Dec 2011
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RC C13577: 'Review of "The morning NOx maximum in the forest atmosphere boundary layer," by Alaghmand et al.', Anonymous Referee #3, 22 Dec 2011
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
- Printer-friendly version
- Supplement
-
RC C13151: 'Review of Alaghmand et al.', Anonymous Referee #2, 13 Dec 2011
-
RC C13436: 'Link Between Conclusions and Measurements', William Stockwell, 20 Dec 2011
-
RC C13577: 'Review of "The morning NOx maximum in the forest atmosphere boundary layer," by Alaghmand et al.', Anonymous Referee #3, 22 Dec 2011
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Cited
12 citations as recorded by crossref.
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- Reconciling Observed and Predicted Tropical Rainforest OH Concentrations D. Jeong et al. 10.1029/2020JD032901
- In-canopy gas-phase chemistry during CABINEX 2009: sensitivity of a 1-D canopy model to vertical mixing and isoprene chemistry A. Bryan et al. 10.5194/acp-12-8829-2012
- OH and HO2 radical chemistry during PROPHET 2008 and CABINEX 2009 – Part 1: Measurements and model comparison S. Griffith et al. 10.5194/acp-13-5403-2013
- Dynamics of nitrogen oxides and ozone above and within a mixed hardwood forest in northern Michigan B. Seok et al. 10.5194/acp-13-7301-2013
- Photochemical characteristics of high and low ozone episodes observed in the Taehwa Forest observatory (TFO) in June 2011 near Seoul South Korea S. Kim et al. 10.1007/s13143-013-0031-0
- Observations of reactive nitrogen oxide fluxes by eddy covariance above two midlatitude North American mixed hardwood forests J. Geddes & J. Murphy 10.5194/acp-14-2939-2014
- Measurements of ambient HONO concentrations and vertical HONO flux above a northern Michigan forest canopy N. Zhang et al. 10.5194/acp-12-8285-2012
- Evaluation of HOx sources and cycling using measurement-constrained model calculations in a 2-methyl-3-butene-2-ol (MBO) and monoterpene (MT) dominated ecosystem S. Kim et al. 10.5194/acp-13-2031-2013
- Coupling processes and exchange of energy and reactive and non-reactive trace gases at a forest site – results of the EGER experiment T. Foken et al. 10.5194/acp-12-1923-2012
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Latest update: 22 Feb 2025
M. Alaghmand
Purdue University, Dept. of Chemistry, West Lafayette, IN, USA
P. B. Shepson
Purdue Climate Change Research Center, West Lafayette, IN, USA
Dept. of Earth and Atmospheric Sciences, West Lafayette, IN, USA
Purdue University, Dept. of Chemistry, West Lafayette, IN, USA
T. K. Starn
West Chester University, Dept. of Chemistry, West Chester, PA, USA
B. T. Jobson
Washington State University, Dept. of Civil and Environmental Engineering, Pullman, WA, USA
H. W. Wallace
Washington State University, Dept. of Civil and Environmental Engineering, Pullman, WA, USA
M. A. Carroll
University of Michigan, Dept. of Atmospheric, Oceanic, and Space Sciences, Ann Arbor, MI, USA
S. B. Bertman
Western Michigan University, Dept. of Chemistry, Kalamazoo, MI, USA
B. Lamb
Washington State University, Dept. of Civil and Environmental Engineering, Pullman, WA, USA
S. L. Edburg
Washington State University, Dept. of Civil and Environmental Engineering, Pullman, WA, USA
X. Zhou
Wadsworth Center, SUNY-Albany, NY, USA
E. Apel
National Center for Atmospheric Research, Boulder, CO, USA
D. Riemer
RSMAS, University of Miami, Miami, FL, USA
P. Stevens
Indiana University, School of Public and Environmental Affairs, Bloomington, IN, USA
F. Keutsch
University of Wisconsin, Madison, Dept. of Chemistry, Madison, WI, USA
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